Nut and pipe wrench



(No Modle1-).V

R. H; WOODBURY.

NUT AND PIPE WRENH PatentadJune 4, v1895.

y L Maw.

ms Ptrzks ca. FHoro-Lumo.. WASHINGTON D c NITED STATES vrAT1-nvr OFFICE.

NUT AND PIPE WRENCH.

SPECIFICATION forming part of Letters Patent N o. 540,567, dated June 4, 1895.

Application led October 12, 1894. Serial No.525,668. (No model.)

To a/ZZ whom it may concern:

Be it knownv that I, RUFUs H. WooDBURY, a citizen of the United States, and a resident of Beverly, in the county of Essex and State of Massachusetts, have invented new and useing the movable jaw unlocked from the stationary jaw. Fig. 3 represents a cross-section on the line 3 3, shown in Fig. 1. Fig. 4

represents a cross-section on the line 4. 4, shown in Fig. 2; and Fig. 5 represents a cross-section on the line 5 5, shown in Fig. 2.

Similar letters refer to similar parts wherever they occur on the dilferent parts of the drawings.

A represents the upper stationary jaw, having a downwardly projecting shank B preferably provided with a wooden handle C as shown in Figs. l and 2. The shank B is Hattened in cross section as shown in the drawings and on it is longitudinally adjustable the movable jaw D, having a laterally perforated downwardly extending frame D', the lower end ofwhich is likewise guided on the flattened shank B, as shown.

The shank B is provided with an external quick screw thread b, which works in a longitudinally adjustable nut E, provided on its exterior with an annular groove, in which is loosely fitted the ring F which projects slightly outside of the nut E and serves as. a means for manipulating the movable jaw Dto and from the stationary jaw A in adjusting the wrench, according to the size of the object to be held between its jaws. The ring F is fiattened on two opposite sides where it bears against the inside of the hollow frame D so as to prevent its turning around its axis, as fully shown in Fig. 4.

The upper end of the nut E is provided with an annular serrated .face e adapted to interlock with a similar annular serrated face g on a block G secured to or made in one piece with the under side of the movable jaw D as fully shown in Figs. 1, 2 and 5.

The operation is as follows: After adjusting the movable jaw in the desired position relative to the stationary jaw, and grasping an object between them, the pressure exerted between the jaws causes the serrated surfaces g and c to interlock by which the movable jaw is firmly secured to the shank B. y

After removing the wrench from the object, if it is desired to adjust the movable jaw farther toward the stationary jaw, it is only necessary to push upward on the movable jaw, or its frame D', causing the serrated face g to vbe unlocked from the serrated face e on the nut E, and permitting the movable jaw and its perforated frame to be moved upward on the shank B as far as desired, and as soon as the operator ceases to move the jaw D upward, 'l

its serrated face g will be interlocked with the serrated face c on the nut`E causing the jaws to be locked together at the proper distance apart. If it is desired to move the jaw D away fromthe jaw A, it is only necessary to rst slightly raise the movable jaw sufficiently to disengage the serrated face g from the serrated face e on the nut E, after which the said jaw Drnay be moved downward on the shank B by taking hold of the ring F and pulling it downward. During the adjustment of the movable jaw, the nut E is caused to rotate around the screw threaded shank on account of the quick screw thread on the latter.

The jaws A, D, may be smooth or serrated, according to the purpose for which the wrench is used, without departing from the essence of my invention.

`What I wish to secure by Letters Patent and claim is- The herein described wrench, consisting of a stationary jaw A, having a screw threaded shank B, and av movable jaw D, having a hollow frame D adjustable on said shank combined with a longitudinally adjustable nut E,

surrounding said shank and having a ser two subscribing witnesses, on this 25th day of rated face e, adapted to interlock with a ser- September, A. D. 1894. rated face g on the underside of the movable jaw, substantially as and for the purpose set RUFUS I-I. XVOODBURY. 5 forth. 7Witnesses:

In testimony whereof I have signed my ALBAN ANDRN,

name to this specification, in the presence of NETTIE F. WOODBURY. 

